The secret of a Slytherin, oh and demigods blessed by Hecate too

There was a quest issued years ago, one that has been carried out dutifully by six strong demigods. To help save wizard kind. So they cross paths occasionally with Harry Potter, not playing a huge roll in his life but still keeping tabs and staying in the same circle. Each of them given a new character, even if they hate what their given is how they have to act. When the quest and characters were given to you by Hecate, the goddess of magic, there isn't much room to bargain. Sometimes your enemies are the people that make you stronger, and people who you don't always notice can help you in the darkest of times. Then even more demigods are thrown in, and the real adventure begins.